Timothy mchugh



(No Model.)

"T. M HUGH.

SEWER TRAP 0R VALVE.

Patented Nov. 22, 1887. r

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UNITED STATES PATENT OFFICE.

TIMOTHY MoHUGH, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO W. H. WARD & OO., OF SAME PLACE.

SEWER TRAP ORVALVE.

. SPECIFICATION forming part of Letters Patent No. 373,782, dated November 22, 1887.

Application filed May 9, 1887. Serial No. 237,519. (No model.)

To aZZ whom it may concern.-

Be it known that I, TIMOTHY MOHUGH, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and useful Improvements in Sewer Traps or Valves, of which the following is a specification.

Myinvention relates to sewer valves or traps designed to prevent the backing up of sew age or water in sewer-pipes, as also to prevent lo the escape into dwellings of sewer-gas from the pipes.

In the common plumbing systems the trap immediately connected with the wash or closet bowl, sink, 850., is relied upon to prevent the escape of gas from the sewer-pipes into the 4 room of the dwelling, while the valve or trap in the branch main is constructed with a view.

to avoid backing up of the water in the pipes.

It not infrequently happens, however, that thetrap connected with the bowl or sink fails,'as when, for instance, it siphons itself, or when it is not used for a considerable length of time and the water therein dries up.

' It is the object of' my invention to provide 2 improved means whereby both a gas and water tight valve may be readily'arranged and hung in a pipe or main of any description.

I will now' proceed to describe my invention so that others skilled in the art may be able to make and use the same, reference being. had

to the accompanying drawings, and to the letters of reference marked thereon, forming a part of this specification, the same letters indicating the same parts Wherever they occur.

Of the drawings, Figure 1 represents a longitudinal section through a portion of a main having my improved valve or trap secured in position therein. Fig. 2 is a transverse section of the same. Fig. 3 is a side elevation of the valve and itsimmediate connections removed from the main. Figs. 4c and 5 are details of a modification, hereinafter referred to.

In carrying out my invention I cast or otherwise construct a ring or collar, A, having a 4 5 rim or flange, a, and ears or lugs b b, and form a peripheral groove, 0, in such ring or collar just to the rear of the rim or flange a. The diameter of the complete ring or collar A corresponds to that of the interior diameter of the main or pipe B at the point (I, which main or pipe has a flange or offset at 6, against which the flange a is adapted to rest,'and is provided with a groove,f, at a point which registers with the groove 0, formed in the ring A,when the latter is placed in the main or pipe B, as represented in Fig. 1.

V represents the valve or gate, which is of concavo-convex form, adapted to be placed on the forward end of the ring or collar A against the beveled valve-seat g, with the convex or crown side of the'valve toward the rear and the concave side facing forward in the direction of the flight of the arrow pictured in Fig. 1. An arm, h, is pivoted or otherwise somewhat loosely secured at its lower end, as at 2', to the cenflier of the concave face of the valve or gate, and the upper end of said arm, which is formed at an angle to the main portion, so as to extend rearwardly over the edge of the valve or gate and over the'collar A, is pivoted, as atj, to the ears or lugs b b, so that the valve or gate can be swung forwardly and upwardly in the main to a horizontal position, and so leave a smooth, free, and unobstructed opening or passage through the ring or collar. The construction and arrangement of the valve and its supports are such that when the valve is in its normal position (which is that in which it is represented in Fig. 1) it will rest closely against its inclined seat 9, so that if the influences in the main on both sides of'the valve were equal or balanced the valve would remain closed, so as not to permit water or gas in the main forward of the valve to pass to the rear thereof.v The least pressure, however, on the 8 rear of the valve greater than that in front will open it, so as to allow any water to pass therethrough. The manner described of supporting or hanging the valve or gate also provides for bringing the same squarely to its seatthat is, on closing the valve after the same has been opened, all parts thereof that come in contact with the inclined seat 9 touch or are brought to bear on the same at the same instant. This, together with the fact that the gate or valve is somewhat loosely pivoted or otherwise connected with arm h, makes provision whereby the valve may be securely, squarely, and closely seated when closed, as shown in Figs. 1 and 2. The ring or collar A is secured in position in the main B by chipping away a portion of the main or ring, as at 70, or otherwise providing means whereby cement or melted metal can be poured into the space formed by the grooves c and f, the former in the ring A and the latter in the main B, as clearly shown in Fig. 1.

H represents the usual hand-hole formed in the main whereby access is had to the pipe or main and gate or valve, which latter, being secured in its pivot t by means of a nut, a, or similar device, can readily be removed and repaired or replaced when occasion may require. The hand-hole H is closed by means of a lid or cover, Z, adapted to fit thereover and to be secured in place by means of a bale, m, having lugs or cars 0, adapted to catch under a flange, 1), formed about the edge of the hand-hole, a thumb-screw, q, being turned through the center of the bale m, whereby itmay be forced firmly down upon its seat.

1' indicates a packing sheet or diaphragm interposed between the lid 1 and its seat to se cure a close tightjoint; and, as a means to the same end, the lid may be provided with a groove around above its seat, in which groove may be placed a packing-strip, s, of any suitable material, as shown in Fig. 2.

The eoncavo-convex form of the valve, the smooth form of the ring or collar A interiorly, the manner of securing the ring in place in the main, and manner of supporting and seating the "alve are all important t'eaturesof the invention, as tending to secure the ends had in view in making the invention, as recited at the outset of this description.

Though I have been particular to describe the form and arrangement of the parts precisely as here'shown, it is obvious that these may be varied without departing from the nature or spirit of the invention. For instance, instead of forming lugs 12 b on the ring A, similar lugs or ears may be cast or otherwise formed on the main B, as represented at t t in Figs. 4 and 5, and the pivot uof arm hintegrally connected therewith and dropped in the notches o of lugs t.

Having thus described my invention, what I claim is- 1. In asewer-trap, the combination, with a ring, A, provided on its periphery with ears or lugs b, of a concavo-convex valve or gate, V, and arm h, loosely connected at its lower end to said valve and provided at its upper end with an angular part pivoted to the ears or lugs b, as set forth.

2. In a sewer-trap, the combination, with the main or pipe B, provided with a groove, f, and shoulder or offset 0, of a ring, A, provided with a flange, a, and groove 0, and a ring of cement, lead, or similar material molded in said groovesf and c, as set forth.

3. The combination, with the main or pipe B, of a ring, A, provided with avalve-seat secured in said main, and. a gate or valve, V, adapted to be seated on or against said ring, and provided with an arm pivoted at its upper end to said ring and loosely connected at its lower end to said gate or valve, as and for the purposes set forth.

In testimony whereof I have signed my name to thisspecitieation, in the presence of two subscribing witnesses, this 5th day of May, A. D. 1887.

TIMOTHY MCHUGH. iVitnesses:

A. D. HARRISON, ARTHUR W. ORossLEY. 

